To provide a method for recovering metal in ash in which the treatment cost can be reduced while the metal of high purity containing no chlorine can be easily recovered.
This method comprises a melting step of generating molten metal with a plurality of metal compositions in ash melted therein, an adsorbing step of bonding each specified metal composition with a metal adsorbent by the specified metal composition by bringing the obtained molten metal into contact with a metal adsorbent capable of selectively being bonded with specified metal compositions (lead, copper), an eluding step of bringing the eluant into contact with the metal adsorbent by the obtained specified metal composition to elude the metal by the eluant, a main electrolytic sampling step (an electrolytic lead sampling step, an electrolytic copper sampling step) to perform the electrolytic deposition of each specified metal composition by the electrolysis of the eluant by the obtained specified metal composition, and a sub electrolytic sampling step (a zinc electrolytic zinc sampling step) to perform the electrolytic deposition of the metal composition (zinc) other than the specified metal compositions by the electrolysis of the molten metal after performing the adsorbing step for each of the specified metal compositions.
COPYRIGHT: (C)2003,JPO
Tomohisa Ota
Koji Mishima
| JP10174950A |